Rack-and-pinion device.



H. J. IRVINE.

BACK AND PINION DEVICE.

APPLIOA'IION FILED MAY'7, 1913.

Patehted Sept. 1, 1914.

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THE NORRIS PETERS 60., PHOTO-L!THO.. WASHINGTON. D. C.

HARRY 3'. m, or BLUE amiss, Iowa.

RAoK-ANn-rI NIoN DEVICE,

Application filed May 7, 1913. semi No. 766,184.

ToaZZ whom it may concern Be it known that I, HARRY J. IRVINE, a citizen of the United States, residing at 'Blue'"Grass, in the county of Scott and State of Iowa, have invented new and useful Improvements in Rack-and-Pinion Devices, of which the following is a specification.

i The invention relates to means for operating the pump rod of a hydraulic jack.

The main object of the present invention is the provision of an operating means and connection for jacks in which the cooperinterchangeable to vary the length of stroke, the operating means in connection as a whole being designed to work from above, below, or at one side of the jack.

The invention in the preferred form of details will be described in. the following specification, reference being had particularly to the accompanying drawings, in

which:

Figure 1 is a view in elevation illustrating the improved connection applied to the connecting or pump rod. Fig. 2 is a vertical section on the line 22 of Fig. 1. Fig. 3 is a transverse section on the line 33 of Fig. 1. 3

Referring particularlyto the accompanylng drawing the improved operating means is made primarily of two members one a driving element and the other a driven element. f The driving element comprises a pinion 1 fixed upon a shaft 2, operatively mounted in a suitable support 3 and driven in any appropriate or desired manner.

The driven element comprises. an elongated member 4 including an annular wall 5 formed to provide a depression 6 throughout its outer contour or edge on the inner side of the bottom or outer wall of this depression is provided a series of teeth 7 of a size and shape to cooperate with the teeth of the pinion. The outer side section of the annular wall 5 is projected beyond the relatively adjacent wall 8 of the depression and is formed with a channel 9 of a size to receive the end 10 of the shaft 2 projecting beyond the pinion, the cooperation of the shaft terminal and channel forming a guide to insure engagement ofthe pinion with the Gopiesof this patent may be obtained for five cents each, by addressing a Washington, I). 0.

Specification of Letters Patent.

ating parts are of simple type and readily.

Patented. se t. 1, .1914.

adjacent gear the wall 5 is gles to the adjacent wall 11 of the depres-j teeth 7; v The opposing side" of i projected laterally at right anl sion', as at 12 and is then turned outwardly as at 13 forming a guide channel ordepres- SlOIl 15, as will be seenin Fig. 3. The bot-{ tom wall of the channel 15 thusextends parallel relation toa closure adjacent the shaft 2 of the pinion, and on said shaft is rotatably mounted a guide 16 having a hook end 17 to seat in the depression. The; pinion is thus accurately guidedyaround, and compelled to. follow the contour of, the wall 5 by the guides described, and hence'it will be obvious that in the actuation of the pm ion the driven member is given a vertical reciprocating movement. driven member 1s formed or provided with One end of the a socket or other connector18 whereby the;

pump rodl'9 maybe secured thereto.

It is obvious from the connectorand operating means described that a reciprocatory movementwill be imparted to the pump rod in the operation of the pinion and that any,

desired size of driven membermay beprovided for affording the length of stroke desired. l

VVhat is claimed as new, is l A pumprod operating connection includ inga support, a driven member, a section of approximately elliptic'form, said section being formed. with an edge channel :pro-

vided with teethon one wall thereof, a pinion cooperating with the teeth, and a shaft mounted in the support and carrying the pinion, said elliptic section being formed with a guiding channel to-receivethe'shaft and hold the pinion in cooperation with the teeth of the member, said member being formed with an additional guiding channel following the contour of the section, anda guiding element carried on the shaft and cooperating with said last mentioned channel, the respective guiding channels being disposed on oppositesides ofthe pinion.

In testimony whereof I afiix my signature I in presence of two witnesses.

Witnesses I WILLIAM A. TEUFEL,

H. F. WUNDER.

the (lommissionerfof Patents,

HARRY J. IRVINE; 

